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Finding the Fourth Proportional to 2,840.66, 3,916.32 and 2,549.06

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Solution

The fourth proportional to 2,840.66, 3,916.32 and 2,549.06 is: 3,514.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.66 : 3,916.32 = 2,549.06 : x
  2. Step 2: Convert to fraction form
    2,840.66/3,916.32 = 2,549.06/x
  3. Step 3: Cross multiply
    2,840.66x = 3,916.32 × 2,549.06
  4. Step 4: Simplify right side
    2,840.66x = 9,982,934.66
  5. Step 5: Solve for x
    x = 9,982,934.66/2,840.66
  6. Step 6: Final answer
    x = 3,514.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.